in those days

在那些日子里，男孩们过去常穿短裤。

___In ___those ___days, boys used to wear short trousers.

在那些日子里，生活比现在艰难得多。

___In ___those ___days, life was much harder than now.

当时的医生对霍乱有两种相互矛盾的理论。

Doctors ___in ___those ___days had two contradictory theories about cholera.